9O EDUARD UHLENHUTH. 



This basin is filled with water half of its depth. Hence the surface 

 of the water stands at the same level with the surface of the water 

 in Frank Johnson's Well, and the suggestion seems justified that in 

 this basin again part of the Purgatory Creek System was opened 

 up. The water has the same taste as the water of the other 

 localities mentioned and also has the same temperature (21.5 C.). 

 In which way, however, this basin in Beaver Cave could be con- 

 nected with the other localities cannot be stated with certainty at 

 present, since the log lining of the wall made it impossible to 

 search more closely whether or not the rocks of the wall contain 

 any larger cracks or crevices. It also was not determined 

 whether the water is flowing. But its clearness and the fact that 

 the mud when stirred up disappears in a relatively short time 

 would speak in favor of a slight current in the water. There is, 

 however, one fact which hardly could be explained in any other 

 way than that the water in the basin must be in connection at 

 least at certain times with some larger bodies of water. The 

 well in Beaver Cave contains both the Palceinonetes antronnn and 

 the Cirolanides texensis, animals the transmission of which to the 

 basin since it was constructed must have taken place by means of 

 water currents which drive water from certain water bodies 

 (harboring these animals) through the well. 



Hence it is most probable that the water of Frank Johnson's 

 Well, of Ezell's Cave and of Beaver Cave is the water of the sub- 

 terranean Purgatory Creek System. 



In the well of Beaver Cave two Typhlomolge were caught, one 

 by means of a dip-net, the other in a trap which was laid with its 

 opening just in front of a hole into which the animal had been 

 seen to pass. One specimen was 82 mm. in length, the other 

 one the largest caught measured 120 mm. Both these animals 

 were observed for some time before they were actually caught ; 

 they proceeded to move in characteristic fashion as described 

 very accurately by Normann by intermittent walking and rest- 

 ing in the presence of light. Even when the rays fell directly 

 upon them, they did not seem to be disturbed. In this respect 

 our observations made in the animal's natural habitats, agree 

 verv well with the observations made bv Normann in the labora- 



